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Probable
L-ascorbate-
6-phosphate
lactonase ulaG
L-xylulose/3-
keto-L-
gulonate kinase
2,3-diketo-L-
gulonate
reductase
3-keto-L-
gulonate-6-
phosphate
decarboxylase
ulaD
3-keto-L-
gulonate-6-
phosphate
decarboxylase
sgbH
L-ribulose-5-
phosphate
4-epimerase
sgbE
L-ribulose-5-
phosphate
3-epimerase
ulaE
L-ribulose-5-
phosphate
4-epimerase
ulaF
predicted
L-xylulose
5-phosphate
3-epimerase
Phosphocarrier
protein HPr
Phosphocarrier
protein HPr
Ascorbate-
specific
phosphotransferase
enzyme IIA
component
Ascorbate-
specific
phosphotransferase
enzyme IIB
component
Ascorbate-
specific
permease IIC
component ulaA
Xylulose
5-phosphate
Xylulose
5-phosphate
L-ascorbate
6-phosphate
H
2
O
3-keto-L-
gulonate
6-phosphate
3-Dehydro-L-
gulonate
ATP
ADP
H
+
2,3-Diketo-L-
gulonate
NADH
H
+
NAD
dehydroascorbate
(bicyclic form)
H
+
Dehydroascorbic
acid
H
2
O
H
2
O
2
H
+
Ascorbic acid
Ascorbic acid
H
2
O
H
+
L-xylulose
-5-phosphate
CO
2
H
+
CO
2
L-xylulose
-5-phosphate
L-ribulose
5-phosphate
L-ribulose
5-phosphate
Ascorbic acid
Pentose
Phosphate
Pentose
Phosphate
ANAEROBIC
AEROBIC
ulaG
lyx
dlgD
ulaD
sgbH
sgbE
ulaE
ulaF
yiaR
ptsH
ptsH
ulaC
ulaB
ulaA
Xylulose
5-phosphate
Xylulose
5-phosphate
L-ascorbate
6-phosphate
Water
3-keto-L-
gulonate
6-phosphate
3-Dehydro-L-
gulonate
Adenosine
triphosphate
Adenosine
diphosphate
Hydrogen Ion
2,3-Diketo-L-
gulonate
NADH
Hydrogen Ion
NAD
dehydroascorbate
(bicyclic form)
Hydrogen Ion
Dehydroascorbic
acid
Water
Hydrogen
peroxide
Hydrogen Ion
Ascorbic acid
Ascorbic acid
Water
Hydrogen Ion
L-xylulose
-5-phosphate
Carbon dioxide
Hydrogen Ion
Carbon dioxide
L-xylulose
-5-phosphate
L-ribulose
5-phosphate
L-ribulose
5-phosphate
Ascorbic acid
Pentose
Phosphate
Pentose
Phosphate
ulaG
lyx
dlgD
ulaD
sgbH
sgbE
ulaE
ulaF
yiaR
ptsH
ptsH
ulaC
ulaB
ulaA
Xyl-5-P
Xyl-5-P
LA6P
H
2
O
3KLG6P
3DLG
ATP
ADP
H
+
2,3-DkG
NADH
H
+
NAD
DHABcyc
H
+
DHAA
H
2
O